Calling a Method in java depending on a given string

Question

I want to call a method in java with a given string like this for example:

String string = "HelloWorld";
main.string();

I want something like this to call the method defined in the string, would that be possible? If not (which I am kind of expecting), are there alternatives?

score 0 · Answer 1 · answered Sep 23 '15 at 09:43

There are two main possibilities:

you know wich methods can be called from a particular string
you don't know wich methods can be called

If you know wich methods can be called you only need to do something like

switch(str) {
    case "first":
        obj.firstMethod();
        break;
    case "second":
        obj.secondMethod();
        break;
}

if you don't know wich methods can be called and the string represent the name of the method you can use the reflection as other already commented

Calling a Method in java depending on a given string

1 Answers1